2121011319967 has 2 divisors, whose sum is σ = 2121011319968. Its totient is φ = 2121011319966.

The previous prime is 2121011319961. The next prime is 2121011320037. The reversal of 2121011319967 is 7699131101212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121011319967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121011319961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060505659983 + 1060505659984.

It is an arithmetic number, because the mean of its divisors is an integer number (1060505659984).

Almost surely, 2^{2121011319967} is an apocalyptic number.

2121011319967 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121011319967 is an equidigital number, since it uses as much as digits as its factorization.

2121011319967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 2121011319967 in words is "two trillion, one hundred twenty-one billion, eleven million, three hundred nineteen thousand, nine hundred sixty-seven".